Hold wake lock while printing

more specifically while any print job is
- queued (ready to be printed but not yet printing)
- started (actually printing right now)
- cancelling (printing, but cancel request has been sent)

Test: - Printed successfully
      - Canceled print job
      - Had print job that blocked
      Wake locks looked fine while doing all this
Fixes: 74811014

Change-Id: Ia1a3327bd55fb7f3cc7ecb330d7d2c141d4fdb34